通过一个map替换字符串中指定的字符变量方法

package com.test;import java.util.HashMap;import java.util.Map;public class StringFormat {	public static String format(String input, Map<String, String> map) {		// 遍历map,用value替换掉key		for (Map.Entry<String, String> entry : map.entrySet()) {			input = input.replace(entry.getKey(), entry.getValue());		}		return input;	}	public static void main(String[] args) {		Map<String, String> map = new HashMap<String, String>();		map.put("$1", "value1");		map.put("$2", "value2");		map.put("$3", "value3");		System.out.println("结果:" + StringFormat.format("$1$2$3", map));		// 结果:value1value2value3	}}